102809-71-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102809-71-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,8,0 and 9 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 102809-71:
(8*1)+(7*0)+(6*2)+(5*8)+(4*0)+(3*9)+(2*7)+(1*1)=102
102 % 10 = 2
So 102809-71-2 is a valid CAS Registry Number.